If Australia is on your radar for your next big trip, you're certainly not alone. Drawn to its year-round climate, iconic buildings and stunning natural wonders, 6.4 million visitors landed down under last year, many for the first time. How many of them, though, knew their 'bonzer barbies' from their 'fair dinkum dingos?' If that furrowed your brow, you must read on and find out the biggest questions you should be asking for your trip to the biggest island in the world.